2021 LEXUS LS500 display

2474-5. Using the driving support systems
4
Driving
*1: The function operates even if the vehi-cle speed is less than approximately 32
mph (50 km/h) when the lane center-
ing function is operating.
*2: Boundary between asphalt and the side of the road, such as grass, soil, or a curb
●Steering assist function
This function operates when all of the fol-
lowing conditions are me t in addition to the
operation conditions for the lane depar-
ture alert function.
•Setting for “Steering Assist” in of the
multi-information display is set to “ON”.
( P.82)
• Vehicle is not accelerated or decelerated by a fixed amount or more.
• Steering wheel is not operated with a steering force level su itable for changing
lanes.
• ABS, VSC, TRAC and PCS are not oper- ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not
displayed. ( P.249)
●Vehicle sway warning function
This function operates when all of the fol-
lowing conditions are met.
• Setting for “Sway Warning” in of the multi-information display is set to “ON”.
( P.82)
• Vehicle speed is approximately 32 mph (50 km/h) or more.
• Width of traffic lane is approximately 9.8
ft. (3 m) or more.
• No system malfunctions are detected. ( P.250)
●Lane centering function
This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.
• Setting for “Steering Assist” and “Lane Center” in of the multi-information
display are set to “ON”. ( P.82)
• This function recognizes white (yellow) lane lines or the position of a preceding
vehicle (except when the preceding vehi-
cle is small, such as a motorcycle).
• The dynamic radar cruise control with full-speed range is operating in vehi-
cle-to-vehicle distance control mode.
• Width of traffic lane is approximately 10
to 13 ft. (3 to 4 m).
• Turn signal lever is not operated.
• Vehicle is not being driven around a sharp curve.
• No system malfunctions are detected. ( P.250)
• Vehicle does not ac celerate or deceler-
ate by a fixed amount or more.
• Steering wheel is not operated with a
steering force level su itable for changing
lanes.
• ABS, VSC, TRAC and PCS are not oper-
ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not displayed. ( P.249)
• The driver has one or both hands on the steering wheel. (vehicles with Lexus
Safety System + A)
• The vehicle is being driven in the center of a lane.
• Steering assist function is not operating.
●Lane change assist fu nction (vehicles with
Lexus Safety System + A)
This function will operate when all of the
following conditions are met:
• The lane centering function is operating.
• “Lane Change Assist” is set to “ON” in of the multi-information dis-
play.( P.82)
• The vehicle speed is between approxi- mately 57 and 85 mph (90 and 140
km/h).
• White (yellow) lane lines are detected by
the system.
• A broken white line is detected between your vehicle and the lane toward which
the turn signal is operated.
• The turn signal lever is held partway (lane change position) for approximately 1 sec-
ond.
• A vehicle is not overtaking your vehicle
or detected in the lane toward which the
turn signal is operated.
• The vehicle is being driven straight or
around a slight curve.
• The vehicle is not a ccelerating or decel-
erating more than a certain amount.
• The steering wheel is not being turned sufficiently to perf orm a lane change.

2484-5. Using the driving support systems
• ABS, VSC, TRAC and PCS are not oper-ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not
displayed. ( P.249)
• The dynamic radar cruise control with
full-speed range approach warning is not
operating.
• The lane departure alert function is not
operating.
• The curve speed reduction function ( P.260) is not operating.
■Temporary cancelation of functions
●When operation conditions are no longer
met, a function may be temporarily can-
celed. However, when the operation con-
ditions are met again, operation of the
function is automa tically restored.
(  P.246)
●If the operation conditions ( P.246) are
no longer met while the lane centering
function is operating, the steering wheel
may vibrate and the buzzer may sound to
indicate that the function has been tem-
porarily canceled. However, if the “Alert”
customization setting is set to ,
the system will notify the driver by vibrat-
ing the steering wheel instead of sound-
ing the buzzer.
●If the operating conditions ( P.246) are
no longer met, the buzzer may sound to
indicate that the lane change assist func-
tion has been temporarily canceled.
(vehicles with Lexus Safety System + A)
■Steering assist function/lane centering
function
●Depending on the vehicle speed, lane
departure situation, road conditions, etc.,
the driver may not feel the function is
operating or the function may not oper-
ate at all.
●Even if the curve speed reduction func-
tion ( P.260) operates, the lane center-
ing function may not be able to drive the
vehicle around a curve successfully.
(vehicles with Lexus Safety System + A)
●The steering control of the function is
overridden by the driver’s steering wheel
operation.
●Do not attempt to test the operation of the steering assist function.
■Lane departure alert function
●The warning buzzer may be difficult to
hear due to external noise, audio play-
back, etc. Also, it may be difficult to feel
steering wheel vibrations due to the road
conditions, etc.
●If the edge of the course* is not clear or
straight, the lane departure alert function
may not operate.
●Vehicle with BSM: It may not be possible
for the system to determine if there is a
danger of a collision with a vehicle in an
adjacent lane.
●Do not attempt to test the operation of
the lane departure alert function.
*: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
■Lane change assist function (vehicles
with Lexus Safety System + A)
Depending on the vehicle speed, vehicle
condition, road conditions, or conditions of
the area around the vehicle, the lane
change assist function may not operate or it
may be difficult to recognize that it has
operated.
If steering control oper ation is excessive or
insufficient, it can be corrected by the
driver’s operation of the steering wheel.
In situations such as the following, the lane
change assist function may be canceled:
●When the system no longer detects white
(yellow) lane lines
●When the turn signal lever is operated
fully (right/left turn position)
●When the vehicle speed is outside of the
operational range of the function
●When the system detects operation of
the steering wheel, brake or accelerator
pedal by the driver
While the lane change assist function is
operating, if the system detects that a vehi-
cle is quickly approaching in the lane
toward which the turn signal is operated,
the steering assist may slightly steer the
vehicle away from the la ne while a buzzer is
sounding, the steering wheel is vibrating,

2494-5. Using the driving support systems
4
Driving
and a warning display is displayed on the
multi-information display, to help prevent
the vehicle from entering the lane and alert
the driver of the approaching vehicle.
■Hands off steering wheel warning
In the following situations, a warning mes-
sage urging the driver to hold the steering
wheel and the symbol shown in the illustra-
tion are displayed on the multi-information
display to warn the driver. The warning
stops when the system determines that the
driver holds the steering wheel. Always
keep your hands on the steering wheel
when using this system, regardless of warn-
ings.
Depending on the vehicle condition and
road conditions, the warning may not oper-
ate. Also, if the system determines that the
vehicle is driving around a curve, warnings
will occur earlier than during straight-lane
driving.
●When the system determines that the
driver is driving without holding the steer-
ing wheel while the sy stem is operating
If the driver continue s to keep their hands
off of the steering wheel, the buzzer
sounds, the driver is warned and the func-
tion is temporarily ca nceled. This warning
also operates in the same way when the
driver continuously operates the steering
wheel only a small amount.
The buzzer also sounds even if the alert
type is set to .
●Vehicles with Lexus Safety System + 2.0:
When the system determines that the
vehicle may deviate from the lane while
driving around a cu rve while the lane
centering function is operating.
●When the system determines that the driver is driving with
out holding the steer-
ing wheel while the st eering wheel assist
of the steering assist function is operating
If the driver continues to keep their hands
off of the steering wheel and the steering
wheel assist is operating, the buzzer
sounds and the driver is warned. Each time
the buzzer sounds, the continuing time of
the buzzer becomes longer.
The buzzer also sounds even if the alert
type is set to .
In situations such as the following, the sys-
tem may not be able to detect when the
driver’s hands are on the steering wheel
(vehicles with Lexus Safety System + A):
●If a steering wheel cover is installed.
●If the driver is wearing gloves.
●If something is attached to the steering
wheel.
●If the driver is gripping the wood trim,
stitched area, spokes, or other part of the
steering wheel that does not have sen-
sors.
In situations such as the following, the hands
off steering wheel alert may not operate
and the steering assist function and lane
centering function may operate even if the
driver’s hands are off the steering wheel
(vehicles with Lexus Safety System + A):
●If an object contacts the steering wheel.
●If a wide object or ar ms are held in front
of the steering wheel.
■Vehicle sway warning function
When the system determines that the vehi-
cle is swaying while the vehicle sway warn-
ing function is operating, a buzzer sounds
and a warning message urging the driver to
rest and the symbol sh own in the illustration
are simultaneously displayed on the
multi-information display.

2504-5. Using the driving support systems
Depending on the vehicle and road condi-
tions, the warning may not operate.
■LTA (Lane Tracing Assist) warning mes-
sages
If the following warning message is dis-
played on the multi-information display and
the LTA indicator illumin ates in orange, fol-
low the appropriate troubleshooting proce-
dure. Also, if a different warning message is
displayed, follow the instructions displayed
on the screen.
●“LTA Malfunction Visit Your Dealer”
The system may not be operating properly.
Have the vehicle inspected by your Lexus
dealer.
●“LTA Unavailable”
The system is temporarily canceled due to
a malfunction in a se nsor other than the
front camera. Turn the LTA system off, wait
for a little while, and then turn the LTA sys-
tem back on.
●“LTA Unavailable at Current Speed”
The function cannot be used as the vehicle
speed exceeds the LTA operation range.
Drive slower.
■Lane change assist function warning
messages
If the following warning message is dis-
played on the multi-information display, fol-
low the appropriate troubleshooting
procedure. Also, if a different warning mes-
sage is displayed, follo w the instructions dis-
played on the screen.
●“Lane Change Assist Malfunction Visit
Your Dealer”
The system may not be operating properly.
Have the vehicle inspected by your Lexus
dealer.
●“Lane Change Assist Unavailable See Owner’s Manual”
The system is temporarily canceled due to
a malfunction in a sensor other than the
front camera. Turn the LTA system off, wait
for a little while, and then turn the LTA sys-
tem back on.
●“Unavailable Activation Condition not
Satisfied See Owner’s Manual”
The function cannot be used as the operat-
ing conditions have not been met.
(  P.246) Operate the turn signal lever
again after all of the operating conditions
are met.
●“Unavailable at Current Speed”
The lane change assist function cannot be
used as the vehicle speed is outside of the
operable range. Operate the turn signal
lever again while drivin g at a vehicle speed
within the operable range. ( P.246)
●“Unavailable Surrounding Vehicle
Detected”
The function cannot be used as a vehicle
was detected in the lane toward which the
turn signal was operated. Operate the turn
signal lever again after checking that there
are no other vehicles nearby.
■Customization
Function settings can be changed. (Cus-
tomizable features: P.476)

2514-5. Using the driving support systems
4
Driving
*:If equipped
The RSA system recognizes specific
road signs using the front camera
and/or navigation system (when speed
limit information is available) to provide
information to the driver via the display.
If the system judges that the vehicle is
being driven over the speed limit, per-
forming prohibited actions, etc.
according to the recognized road
signs, it notifies the driver through a
visual notification and notification
buzzer.
When the front camera recognizes a sign and/or information of a sign is
available from the navigation system,
the sign will be displayed on the
multi-information display.

When the Driving support system
information display is selected, a
maximum of 3 signs can be dis-
played. ( P.82)
 When a tab other than the Driving
support system information display
is selected, the following types of
road signs will be displayed.
( P.82)
• Speed limit sign
• Do Not Enter sign (when notification is
necessary)
If signs other than speed limit signs are rec-
ognized, they will be displayed in an over-
lapping stack under th e current speed limit
sign.
RSA (Road Sign Assist)*
Summary of function
WARNING
■Before using the RSA
Do not rely solely upon the RSA system.
RSA is a system which supports the
driver by providing information, but it is
not a replacement for a driver’s own
vision and awareness. Drive safely by
always paying careful attention to the
traffic rules.
Indication on the multi-informa-
tion display

2524-5. Using the driving support systems
The following types of road signs,
including electronic signs and blinking
signs, are recognized.
A non-official or a recently introduced traf-
fic sign may not be recognized.
In the following situations, the RSA sys-
tem will notify the driver.
 When the vehicle speed exceeds
the speed notification threshold of
the speed limit sign displayed, the
sign display will be emphasized and
a buzzer will sound.
 When the RSA system recognizes a
do not enter sign and determines
that your vehicle has entered a
no-entry area, the displayed sign will
flash and a buzzer will sound.
Depending on the situation, a notifica-
tion function may not operate properly.
■Setting procedure
1 Press or of the meter control
switches and select .
2 Press or of the meter control
switches and select “Vehicle Settings”,
then press .
3 Press or of the meter control
switches and select , then press
.
4 Press or of the meter control
switches and select “RSA”, then press
.
■Automatic turn-off of RSA sign display
In the following situations, a displayed
speed limit sign and/or do not enter sign will
stop being displayed automatically:
●No sign has been recognized for a cer-
tain distance.
●The road changes due to a left or right
turn, etc.
In the following situations, stop and yield
signs will stop being displayed automati-
cally:
●The system determines that your vehicle
has passed the sign.
●The road changes due to a left or right
turn, etc.
■Conditions in which the function may
not operate or detect correctly
In the following situations, RSA does not
operate normally and may not recognize
signs, display the incorrect sign, etc. How-
ever, this does not indicate a malfunction.
●The front camera is misaligned due to a
strong impact being applied to the sen-
sor, etc.
●Dirt, snow, stickers, etc. are on the wind-
shield near the front camera.
●In inclement weather such as heavy rain,
fog, snow or sand storms.
●Light from an oncoming vehicle, the sun,
etc. enters the front camera.
Supported types of road signs
Speed limit
US Night speed limit
Do Not Enter
Stop
Yield
Notification function

2534-5. Using the driving support systems
4
Driving
●The sign is dirty, faded, tilted or bent.
●The contrast of electronic sign is low.
●All or part of the sign is hidden by the
leaves of a tree, a pole, etc.
●The sign is only visible to the front camera
for a short amount of time.
●The driving scene (turning, lane change,
etc.) is judged incorrectly.
●If a sign not appropriate for the currently
traveled lane, but the sign exists directly
after a freeway branches, or in an adja-
cent lane just before merging.
●Stickers are attached to the rear of the
preceding vehicle.
●A sign resembling a system compatible
sign is recognized.
●Side road speed signs may be detected
and displayed (if positioned in sight of the
front camera) while the vehicle is travel-
ing on the main road.
●Roundabout exit road speed signs may
be detected and displayed (if positioned
in sight of the front camera) while travel-
ing on a roundabout.
●The front of the vehicle is raised or low-
ered due to the carried load.
●The surrounding brightness is not suffi-
cient or changes suddenly.
●When a sign intended for trucks, etc. is
recognized.
●The navigation system map data is out-
dated.
●The navigation system is not operating.
●The speed information displayed on the
meter and on the navigation system may
be different due to the navigation system
using map data.
■Speed limit sign display
If the engine switch wa s last turned off while
a speed limit sign wa s displayed on the
multi-information display, the same sign dis-
plays again when the engine switch is
turned to IGNITION ON mode.
■If “RSA Malfunction Visit Your Dealer”
is shown
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer.
■Customization
Some functions can be customized. (Cus-
tomizable features: P.476)

2544-5. Using the driving support systems
In vehicle-to-vehicle distance control
mode, the vehicle automatically accel-
erates, decelerates and stops to match
the speed changes of the preceding
vehicle even if the accelerator pedal is
not depressed. In constant speed con-
trol mode, the vehicle runs at a fixed
speed.
Use the dynamic radar cruise control
with full-speed range on freeways and
highways.
Vehicle-to-vehicle distance control
mode ( P.256)
 Constant speed control mode
( P.261)
■Meter display
Multi-information display
Set speed
Indicators
■Operation switchesVehicle-to-vehicle distance switch
“+RES” switch
Cruise control main switch
Cancel switch
“-SET” switchDynamic radar cruise con-
trol with full-speed range
Summary of function
System Components
A
B
C
WARNING
■Before using dynamic radar cruise
control with full-speed range
●Driving safely is th e sole responsibility
of the driver. Do not rely solely on the
system, and drive safely by always pay-
ing careful attention to your surround-
ings.
●The dynamic radar cruise control with
full-speed range provides driving
assistance to reduce the driver’s bur-
den. However, there are limitations to
the assistance provided.
Read the following conditions care-
fully. Do not overly rely on this system
and always drive carefully.
• When the sensor ma y not be correctly
detecting the vehicle ahead:
P.263
• Conditions under which the vehi- cle-to-vehicle distance control mode
may not function correctly:
P.263
●Set the speed appropriately depend-
ing on the speed limit, traffic flow, road
conditions, weather conditions, etc.
The driver is responsible for checking
the set speed.
A
B
C
D
E